1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d0f9d30410d06d847a34f275fb35f1700b0b56f6283290270215d757102721. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaeeeb7c-1e15-4b42-b371-1657bdb63d9c.json and https://artists.proofprofile.net/proofs/artist/eaeeeb7c-1e15-4b42-b371-1657bdb63d9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd390cb5456ce268adfcc0a7fa468b5ce30cdc8ae30aca30349caee577d5520b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91451665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda25a9246560254f1301d699d135f0dba0a9ebc7a85911daec842e80a8901db3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM91451666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba7f9c35e5c17c98f9d1382cff3c12f9d5205f99ef5b183abb18940e6c67f4f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41533144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700863e11e4137cb35f2a565e26232f161d3fa8684779ea992b668cdca2c00be. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41533145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c04b23f482d327823c9a0b7da4471373fb3a7fab8e8bb8a1a5fd6d8f29d5a04. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41533148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76087b70b87d9dd3fed12c5f458b5dfd04443f3db5f9d2e1e7137c5c23f56f3d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41533149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863e0e2b59d29960a710c839e954e3450f903437aadbc75e1b6b71e12e860a4f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21577207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a40952ba8e9f7dce452f27287cf10ce4ad0dd91424fdf72434432b2a91c7c3a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81506081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef601cb5a04b8d9f7863b09646cfdd11fdd0bf6d9a8120051f43f3beacb55ad. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:55:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81506082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37384f5a2958c7db6dd9d55f9935eed7ad7bc303d932f797f1084aa4c3f666e0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:11:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81506086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177d801b66691489de62de4d74e69dda18f930d1632e979d97f571ec24c547d8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP1632304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cad5fc97d7b7bffde1495edb1941be5d333d8552b77304f3e4a686607c6add. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP1632305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e0e6c0d1d42c8c223e532e4f8c715f0f9567665c789f3c6e230079a39e396b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP1632301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246e4e888c3eda675babbf8f167ceb62f6b299336d8b14a4031501e7b1125537. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP1632297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26ec74e18bb35b34b024dfa48f12d731acdb98edabe6ebab437710be363bc64. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:07:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLFP1632291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b47cfb6780d1e7eba9f2b7f2fce8a54306ba919d447df06164618617fce6459. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X1714021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57c381f2f41165d8cf63a30e9aaff886c6bf10ba32a9528cb016d94b56aa605. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X1714023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921764a72ca1dd56bbeee7d37b6b3d5bdca515f58e9cb1f7f12d8e3776c6347d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201708701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead5d1216c772cfa9826ccf48bdef1e68c00634a02b4a378547c8eebeb3e28af. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:23:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201708703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb43c058b7814386cdcb0547cc770dc0cc4d60e2c15291c9bbb7042ad94c9b7. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201708705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebb8fca96192bb0d2b5ce2492dc9f0240a8b6b09e45d16f94ed6fd096df8dc5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201708707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340f8ca8ebc3c373c1278d65388625e6606c069981af96cbab041a3a0727bfe5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92165228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41144d300031bcfcf8df1df1b7940ad18f0a528b6cfe3e28a5d86e07a4b674a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92165229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f9e48035d8b3d63f7d96d82be2eb0dab2cd24ddd832607e006f9ff408c26e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92165231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3954253461a8166a11023e12d100a024e9383f04fa2f5e9293907e77d072e6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92165232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7bc304980e034347b4b383033edaddf2a212e81548546907567334ce37a021. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92165233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1de2733658aaae90107663e64aa82e27d69fb34bfb3c664d0148be561943979. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM92165234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd4688c80c691b00c787abd14aead037e181a5858b1a9eaa12ce86b37afb458. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2132946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ad4748311f0fba3a9d3f16ee4b401dfe7833b6849b1fafe2828295a07924a8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2132947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428c4d2f59773c1743de98859dd7f30e4a451d9f6f1212c51bbed78c0d7f0cee. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2132948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035dfee20259ee6330a1e9581c86a77ddb081b3249eb33ab2c229063121e2f6a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2132949.